大约有 45,000 项符合查询结果（耗时：0.0783秒） [XML]
How can I scan barcodes on iOS?
... use an external framework or library. The iOS ecosystem with AVFoundation now fully supports scanning almost every code from QR over EAN to UPC.
Just have a look at the Tech Note and the AVFoundation programming guide. AVMetadataObjectTypeQRCode is your friend.
Here is a nice tutorial which shows...
How to loop through files matching wildcard in batch file
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Use a single '%' if typing this on the command line. I know the OP doesn't ask about the command line, but that's what I was searching for when this question came up at the top of my Google search. Others may appreciate this bit.
– Jason
Feb...
How do you dismiss the keyboard when editing a UITextField
I know that I need to tell my UITextField to resign first responder when I want to dismis the keyboard, but I'm not sure how to know when the user has pressed the "Done" key on the keyboard. Is there a notification I can watch for?
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Windows 8.1 / Windows 10 breaks my ASP.NET / IIS : “Service unavailable”
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I realize Windows 8.1 has a new IIS 8.5, but if anyone knows specifically why this fails I'd be interested to know. This is pretty much the only extension I am aware that I'm using so I don't know if this is specific to the rewrite module or any modules.
– Si...
Rails - How to use a Helper Inside a Controller
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Note: This was written and accepted back in the Rails 2 days; nowadays grosser's answer is the way to go.
Option 1: Probably the simplest way is to include your helper module in your controller:
class MyController < ApplicationController
include MyHelper
def xxxx
@comments...
Node / Express: EADDRINUSE, Address already in use - Kill server
...f' fails: 14 Mar 21:19:30 - socket.io ready - accepting connections Could now start the server: EADDRINUSE, Address already in use
– Jean Jordaan
Mar 14 '11 at 14:21
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How to get the first element of an array?
...umes that the first element in the array is always has an index of 0. You know what they say about assumption...
– Andy
Aug 9 '15 at 16:19
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Catching “Maximum request length exceeded”
... even two years ago, but I still want to ask whether this worked fine till now? does the string comparison of 'GetEntireRawContent' work fine? I don't think this is a timeout issue. is there anyone standing out for pointing me to uncloudy somewhere regarding this?
– Elaine
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Java List.contains(Object with field value equal to x)
...whether a List contains an object that has a field with a certain value. Now, I could use a loop to go through and check, but I was curious if there was anything more code efficient.
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Set cellpadding and cellspacing in CSS?
... cellspacing attributes are removed in HTML5, so CSS is the only way to go now.
– Ignas2526
Nov 22 '13 at 19:10
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